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118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/**
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******************************************************************************
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* @addtogroup PIOS PIOS Core hardware abstraction layer
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* @{
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* @addtogroup PIOS_BKP Backup SRAM functions
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* @brief Hardware abstraction layer for backup sram
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* @{
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*
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* @file pios_bkp.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2013.
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* @brief IAP functions
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Project Includes */
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#ifndef PIOS_BKP_H_
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#define PIOS_BKP_H_
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/****************************************************************************************
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* Header files
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****************************************************************************************/
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/*****************************************************************************************
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* Public Definitions/Macros
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****************************************************************************************/
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// Backup registers definitions
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// registers reserved for PIOS usage
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#define PIOS_BKP_RESERVED_1 0 // IAP_MAGIC_REG_1
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#define PIOS_BKP_RESERVED_2 1 // IAP_MAGIC_REG_2
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#define PIOS_BKP_RESERVED_3 2 // IAP_BOOTCOUNT
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#define PIOS_BKP_RESERVED_4 3 // PIOS_WDG_REGISTER
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#define PIOS_BKP_RESERVED_5 4 // IAP_CMD1
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#define PIOS_BKP_RESERVED_6 5 // IAP_CMD2
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#define PIOS_BKP_RESERVED_7 6 // IAP_CMD3
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#define PIOS_BKP_RESERVED_8 7
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#define PIOS_BKP_RESERVED_9 8
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#define PIOS_BKP_RESERVED_10 9
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// registers reserved for BOARD specific usage
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#define PIOS_BKP_BOARD_RESERVED_1 10
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#define PIOS_BKP_BOARD_RESERVED_2 11
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#define PIOS_BKP_BOARD_RESERVED_3 12
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// registers reserved for APP usage
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#define PIOS_BKP_APP_RESERVED_1 13
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#define PIOS_BKP_APP_RESERVED_2 14
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#define PIOS_BKP_APP_RESERVED_3 15
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#define PIOS_BKP_APP_RESERVED_4 16
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/****************************************************************************************
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* Public Functions
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****************************************************************************************/
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/** @defgroup PIOS_BKP_Public_Functions
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* @{
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*/
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/**
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* @brief Initialize the Backup Register hardware
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* @param None
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* @retval None
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*/
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void PIOS_BKP_Init(void);
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/**
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* @brief Reads data from the specified Backup Register.
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* @param regnumber: specifies the Backup Register.
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* @retval The content of the specified Data Backup Register
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*/
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uint16_t PIOS_BKP_ReadRegister(uint32_t regnumber);
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/**
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* @brief Writes user data to the specified Backup Register.
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* @param regnumber: specifies the Data Backup Register.
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* @param data: data to write
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* @retval None
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*/
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void PIOS_BKP_WriteRegister(uint32_t regnumber, uint16_t data);
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/**
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* @brief Enable Backup registers write access
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* @param None
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* @retval None
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*/
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void PIOS_BKP_EnableWrite(void);
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/**
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* @brief Disable Backup registers write access
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* @param None
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* @retval None
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*/
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void PIOS_BKP_DisableWrite(void);
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/**
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* @}
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*/
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/****************************************************************************************
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* Public Data
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****************************************************************************************/
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#endif /* PIOS_BKP_H_ */
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